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A spacecraft is in empty space. It carries on board a gyroscope with a moment of inertia of Ig = 24.0 kg · m2 about the axis of the gyroscope. The moment of inertia of the spacecraft around the same axis is Is = 5.00 105 kg· m2. Neither the spacecraft nor the gyroscope is originally rotating. The gyroscope can be powered up in a negligible period of time to an angular speed of 140 rad/s. If the orientation of the spacecraft is to be changed by 25.0°, for what time interval should the gyroscope be operated? Please explain
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. After the wire heats, the current drops to 2.44A
analysis of covariance. using your area of interest identify one independent and two dependent variables such that the
A 2.8-kg piece of aluminum at 28.5 degrees celsius is placed in 1.0 kg of water in a Styrofoam container at room temperature (20 degrees celsius)
A hydraulic lift is used to jack a 970 kg car 13 cm off the floor. The diameter of the output piston is 18 cm, and the input force is 250 N. Calculate the combined work input of all of the strokes
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 1.8 ms. Find the average net force that acts on him during this time
Suppose a car is traveling at +16.8 m/s, and the driver sees a traffic light turn red. After 0.569 s has elapsed, calculate the stopping distance of the car
A bat moving with a speed of 3.25 m/s and emitting sound of 36.0 kHz approaches a moth at rest on a tree trunk. What frequency is heard by the moth
A 1200 kg car moving north at 27 m/s is struck by a 2165 kg car moving east at 11.0 m/s. The cars are stuck together. How fast and in what direction do they move at once after the collision.
Suppose Fuzzy, a quantum-mechanical duck, lives in a world in which h = 2?J · s. What is the minimum uncertainty in the duck's speed
A Ping-Pong ball with mass 1.5 g is attached by a thread to the bottom of a beaker. Determine the diameter of the ball
The height of a helicopter above the ground is given by h = 3.00 t3, where h is in meters and t is in seconds. After 2.00 s, the helicopter pilot lets go of a small mailbag. How long (in seconds) after its released does the mailbag reach the ground?
Two friends are carrying a crate of mass 200 kg up a flight of stairs. The crate has length 1.25 m and height 0.500 m, What is the magnitude of the upper person's force
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